13215716285 has 16 divisors (see below), whose sum is σ = 16704926400. Its totient is φ = 10009287936.

The previous prime is 13215716281. The next prime is 13215716287. The reversal of 13215716285 is 58261751231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13215716285 - 2² = 13215716281 is a prime.

It is a super-2 number, since 2×13215716285² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215716281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94742 + ... + 188168.

It is an arithmetic number, because the mean of its divisors is an integer number (1044057900).

Almost surely, 2^13215716285 is an apocalyptic number.

It is an amenable number.

13215716285 is a deficient number, since it is larger than the sum of its proper divisors (3489210115).

13215716285 is a wasteful number, since it uses less digits than its factorization.

13215716285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94940.

The product of its digits is 100800, while the sum is 41.

The spelling of 13215716285 in words is "thirteen billion, two hundred fifteen million, seven hundred sixteen thousand, two hundred eighty-five".